Shielded Connector Frame Layout for Warpage Detection
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Solution Overview
Problem
Existing connectors experience warpage during high-temperature mounting on substrates, making detection of such warpage difficult, and there is a need to easily identify the orientation of connectors with shield members and socket housings.
Innovation Solution
A connector design featuring a resin body member with a frame portion and recessed portions that allow for visual detection of warpage and easy orientation identification, including signal and ground terminals supported by the frame, with specific corner portions uncovered by ground terminals to maintain high-frequency operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connector is mounted on a substrate by solder in a high-temperature state, then the mounting process is completed, but warpage occurs in the connector making detection difficult
Solution Approach 1:
The patent applies a light-receiving member (optical sensor) that detects changes in light transmission or reflection caused by warpage. The detection system monitors optical property changes in the connector body, enabling automatic detection of warpage during or after the high-temperature soldering process without requiring visual inspection.
Solution Approach 2:
The patent replaces manual visual inspection or mechanical measurement methods with an optical detection system. The light-receiving member automatically detects warpage by measuring light transmission through or reflection from the connector, substituting mechanical/d manual detection with an optical field-based measurement system.
2Reliability
If ground terminals cover all corner portions of the frame, then connection reliability is improved, but high-frequency operation performance deteriorates
Solution Approach 1:
The patent applies local quality by making the ground terminal configuration non-uniform: ground terminals are provided at three corner portions of the frame but deliberately omitted from one corner portion. This localized variation allows the connector to maintain high connection reliability through sufficient ground connections while preserving high-frequency operation performance by avoiding ground terminals that would create unwanted capacitance or interference at critical locations.
Data Source
AI summary
In a connector, a right front corner portion of a frame portion is not covered with a ground terminal when viewed in an up and down direction, a recessed portion is provided on a top surface of the frame portion, and the connector is mounted on a circuit board such that a bottom surface of the resin body member is opposed to the circuit board. Part of the frame portion surrounding the recessed portion when viewed in the up and down direction is not present.